I am a new fan of shampoo bars for many reasons. The lather is incredible, the bar is long lasting, I have shinier hair with zero buildup, and it’s all natural!
My recipe contains a lot of castor oil, which creates a rich and foamy lather. Coconut oil and palm oil also provide a fluffy lather and add to the hardness of the bar. Tea tree essential oil is an antiseptic and is known to help treat scalp conditions such as dandruff and head lice. Plus, it stimulates new hair growth by removing dead skin cells from hair follicles. It also smells minty and fresh, leaving you energized and revitalized for the day. I rub the bar in a couple small circles right on my head and work the lather up with my fingers.
Three Pound Batch Shampoo Bar Recipe:
10 oz Coconut oil
10 oz Palm oil
8 oz Castor oil
8 oz Olive oil
12 oz Distilled Water
5 oz Sodium Hydroxide
1.5 oz Tea tree essential oil
If you have never made soap from scratch before, please check out Anne-Marie’s four part series on cold process before trying this recipe. It is really important to understand how to work with sodium hydroxide (lye) so that you are soaping on the safe side.
Your oils and lye should be around 100 degrees when combined. Add color at trace if you like, or leave neutral, then add fragrance. Stick blend to a thick trace and pour into mold. Use a spatula to create peaks on the surface for texture and grip. Remove the soap from the mold after 24 hours and cure the bars on a rack for 4-six weeks. Enjoy!
Tip! If your hair is extra dry, try incorporating some vitamin rich oils such as avocado and sweet almond oil. Jojoba oil is amazing as well, but currently a bit pricey. If you change the recipe, make sure to re-calculate the lye.

Thanks for this! I’ve been wanting to try a shampoo bar, and it’s nice to have a base recipe to start from. It looks wonderfully lathery!
I am loving my shampoo bar. I don’t think I’ll go back to liquid shampoo!
I love shampoo bars. A little spearmint with the tea tree is invigorating too. Also for those that feel like your hair is dry a vinegar rinse works awesome. Thanks for the great tutorials otion.
Great advice, I will try that vinegar rinse and the spearmint sounds SO good!
This looks great! Can I make only half the recipe? Thanks
Thanks! Make sure to run a new recipe through a lye calculator to make sure everything is accurate, even when splitting a batch.